A Patient Has Taken Five or Six Nitroglycerin Tablets Per

A patient has taken five or six nitroglycerin tablets per day to prevent chest pain for more than 2 years.His health care provider has recommended that he decrease the amount of medication he takes a day to no more than three tablets.This patient should reduce his medication according to which of the following timetables?

A) Stop taking the medication all at once.
B) Take one fewer tablet every 2 months.
C) Gradually cut down over a period of time.
D) Take the medication once a week.